Stay updated with real-time air quality in Pekin, Illinois featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
54
Moderate
Pekin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.33 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
50.14 μg/m³
0
55
155
255
425
605+
15.29 ppb
0
55
71
86
201
201+
0.53 ppb
0
36
76
186
605
1005+
4.64 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Pekin, Illinois
Pekin, Illinois
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AQI 56
Moderate
11.59μg/m³
PM2.5
51.00μg/m³
PM10
15.47ppb
O3
0.54ppb
SO2
4.71ppb
NO2
0.21ppm
CO
AQI 56
Moderate
11.62μg/m³
PM2.5
51.00μg/m³
PM10
15.63ppb
O3
0.54ppb
SO2
4.75ppb
NO2
0.21ppm
CO
AQI 64
Moderate
16.21μg/m³
PM2.5
71.34μg/m³
PM10
15.72ppb
O3
0.33ppb
SO2
8.30ppb
NO2
0.19ppm
CO
AQI 66
Moderate
16.83μg/m³
PM2.5
74.05μg/m³
PM10
19.42ppb
O3
0.30ppb
SO2
8.69ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.82μg/m³
PM2.5
48.01μg/m³
PM10
16.11ppb
O3
0.40ppb
SO2
4.52ppb
NO2
0.21ppm
CO
AQI 66
Moderate
16.96μg/m³
PM2.5
75.07μg/m³
PM10
16.21ppb
O3
0.61ppb
SO2
9.00ppb
NO2
0.20ppm
CO
The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Pekin, Illinois are available every hour.
Pekin, Illinois experienced its worst air quality at 06:00:00, 2025-12-06.
The best air quality in Pekin, Illinois was observed at 07:00:00 on 2025-12-07.
The air quality in Pekin, Illinois right now is Moderate, with an AQI of 54.
In Pekin, Illinois, PM2.5 is the most frequently found pollutant.
When air quality in Pekin, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Pekin, Illinois currently has a PM2.5 concentration of 11.334 μg/m3.
Pekin, Illinois currently has a PM10 concentration of 50.138 μg/m3.
The current carbon monoxide (CO) level in Pekin, Illinois is 0.212 ppm.
The current sulfur dioxide (SO2) concentration in Pekin, Illinois is 0.53 ppb.
Pekin, Illinois currently has an ozone (O3) concentration of 15.285 ppm.
The current level of nitrogen dioxide (NO2) in Pekin, Illinois is 4.643 ppb.
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